Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB25153/25A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ingersoll Rand CofiledCriticalIngersoll Rand Co
Publication of GB250109ApublicationCriticalpatent/GB250109A/en
B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
B25D9/14—Control devices for the reciprocating piston
B25D9/16—Valve arrangements therefor
B25D9/24—Valve arrangements therefor involving a rocking-plate type valve
Landscapes
Physics & Mathematics
(AREA)
Fluid Mechanics
(AREA)
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Earth Drilling
(AREA)
Abstract
250,109. Ingersoll-Rand Co., (Assignees of Bayles L. C., and Slater, F. M.). May 27, 1925, [Convention date]. Percussive drills.-A rock drill, particularly a stoping drill, is provided with an oscillating disc valve Q reversed by the pressure of the actuating fluid and arranged to encircle the twist bar F and controlling the admission to both ends of the cylinder bv way of ports Y, Z. The valve chest is formed of two parts, a ring 0 and a cover P. The exhaust port a is controlled by the piston. A sealing sleeve T may be provided between the valve and the twist bar.
GB25153/25A1925-05-271925-10-08Improvement in disk valves for rock drills
ExpiredGB250109A
(en)